I think if Houston does miraculously advance, CP3 could come back sometime in the Finals. Still think HOU would beat them in 5. Their role players are far better than Cleveland's, and they got no answer for Harden either (I mean, Harden + Paul OR Harden + Gordon vs. JR + Hill... yikes).
Jaylen and Rozier just showed their inexperience last night and it lost the game, but Harden and Paul and Gordon all have great postseason experience.